In order to understand the nutritional quality of Chinese mitten crabs cultured with compound feed and chilled fish during hoarding, Chinese mitten crab cultured with compound feed and Chinese mitten crab cultured with fresh fish were stockpiled for three months to compare their edible rate, conventional nutrients, fatty acids and free amino acid composition. The results showed that： during the hoarding period, the gonadal index of the two bait Chinese mitten crab showed an upward trend, the hepatopancreatic index and total edible rate showed a downward trend, and there was no significant change in the meat yield； during the hoarding period, the water and protein content of liver and pancreas of the two bait Chinese mitten crab showed an upward trend, the fat content showed a downward trend, the gonadal fat showed a downward trend, and there was no obvious change in nutrients in the muscle； the content of C18:2n6 （LA） in the edible tissue （except for the fine nest） of Chinese Mitten Crab cultured with compound feed was significantly higher than that in Chinese mitten crab cultured with chilled fish, while the contents of EPA and DHA in hepatopancreas and ovaries were significantly lower than those in Chinese mitten crab cultured with chilled fish. After stockpiling, the contents of edible tissues C18:2n6（LA）, C20:4n6 （ARA） and ∑n-6PUFA in Chinese mitten crab cultured with compound feed increased and were significantly higher than those in Chinese mitten crab cultured with fresh fish, and the contents of EPA, DHA and ∑n-3PUFA in Chinese mitten crab cultured with fresh fish were increased and significantly higher than those in Chinese mitten crab cultured with compound feed； after hoarding the two bait Chinese mitten crab, the content of sweet amino acids （Gly） in the muscles increased, while the content of bitter amino acids （His, Ary, Pro） decreased, and the content of umami amino acids and sweet amino acids in the gonads decreased. In summary, there was no obvious “ointment” phenomenon during the hoarding of Chinese mitten crab cultured by two kinds of bait, but there was a significant loss of edible tissue nutrients, especially the liver and pancreas. From the perspective of fatty acids and amino acids, the content of LA and ARA of compound feed cultured Chinese mitten crab increased during the hoarding period, and the EPA and DHA content of chilled fish cultured Chinese mitten crab increased. On the whole, hoarding had a certain optimization effect on Chinese mitten crab fatty acids, the content of sweet amino acids in muscles increased, while the content of umami amino acids and sweet amino acids in the gonads decreased, and the overall quality deteriorated.